In the large scale project of software development , Many questions and answers ( lt is assumed Q & A at the fc } 110wing ) are raised Since many partner companies including offshore vendors develop by cooperating in a different place . In waterfall development , it is said that more Q & A in the lower process about work products created in upper process is , the worse the quality is . Agile deve ] opment emphasizes indMduals ' communication , so the infbrmation transmission is basically done

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... the conversation . in this project which is agile development characterized by collaboration with offshore vendors , Q & A was used as one ofthe communications tools. In this paper , the index that can be used in another pr 〔 ) j ect in the future , which is proposed, by analyzing Q & A raised in agile development collaborated with offshore vendor and considering quality and man − hour fbr agile development compared its for waterfall development.